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UBC Theses and Dissertations
Sonochemical reactor design based on electrostatic film transducers Bolleman, Brent John
Abstract
Sonochemistry is a relatively new field of chemistry which uses intense sound energy to influence chemical reactions. Laboratory investigations have indicated that a number of commercially important chemical processes can be improved by sonochemistry techniques. However, there does not appear to be any sonochemical reactor designs which are feasible for use at the industrial scale. All the reactor designs proposed thus far utilize piezoelectric or magnetostrictive transducers for generating the sound energy. These transducers are widely used for other sound applications, but their properties make construction of an industrial-scale sonochemical reactor complex and expensive. A new sonochemical reactor design based on electrostatic film transducers is introduced here which may present a breakthrough in the economic feasibility of industrial sonochemical processing. A working prototype of this reactor was not achieved because the maximum sound pressure which could be obtained from simple electrostatic film transducer prototypes was only a fraction of that required for cavitation. An acoustic model of the reactor was developed and experimentally confirmed which showed that the reactor sound pressure was limited primarily by excessive damping in the transducer. Commercialization of this technology will first require the construction of a high-pressure electrostatic film transducer with minimal damping. This could then be followed by lab-scale reactor manufacture, pilot plant evaluations, and finally industrial-scale implementation.
Item Metadata
Title |
Sonochemical reactor design based on electrostatic film transducers
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1994
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Description |
Sonochemistry is a relatively new field of chemistry which uses intense sound
energy to influence chemical reactions. Laboratory investigations have indicated
that a number of commercially important chemical processes can be improved by
sonochemistry techniques. However, there does not appear to be any sonochemical
reactor designs which are feasible for use at the industrial scale. All the reactor
designs proposed thus far utilize piezoelectric or magnetostrictive transducers for
generating the sound energy. These transducers are widely used for other sound
applications, but their properties make construction of an industrial-scale
sonochemical reactor complex and expensive. A new sonochemical reactor design
based on electrostatic film transducers is introduced here which may present a
breakthrough in the economic feasibility of industrial sonochemical processing. A
working prototype of this reactor was not achieved because the maximum sound
pressure which could be obtained from simple electrostatic film transducer prototypes
was only a fraction of that required for cavitation. An acoustic model of the reactor
was developed and experimentally confirmed which showed that the reactor sound
pressure was limited primarily by excessive damping in the transducer.
Commercialization of this technology will first require the construction of a
high-pressure electrostatic film transducer with minimal damping. This could then be
followed by lab-scale reactor manufacture, pilot plant evaluations, and finally
industrial-scale implementation.
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Extent |
6689500 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-02-25
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0080926
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1994-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.